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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Ref 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Ref 5140

Patek Philippe Platinum Perpetual Calendar Ref 5140

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Vacheron Constantin - Vacheron Constantin Steel Automatic Watch - The Keystone Watches

Vacheron Constantin Steel Automatic Watch

Vacheron Constantin Steel Automatic Watch

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Patek Philippe Yellow Gold Calatrava Watch Ref. 3445, Retailed by Gubelin

Patek Philippe Yellow Gold Calatrava Watch Ref. 3445, Retailed by Gubelin

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A. Lange & Sohne - A. Lange & Sohne Yellow Gold Datograph Watch Ref. 403.041 on Wellendorf Bracelet - The Keystone Watches

A. Lange & Sohne Yellow Gold Datograph Watch Ref. 403.041 on Wellendorf Bracelet

A. Lange & Sohne Yellow Gold Datograph Watch Ref. 403.041 on Wellendorf Bracelet

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Audemars Piguet - Audemars Piguet Platinum Dual Time Ref 25685 - The Keystone Watches

Audemars Piguet Platinum Dual Time Ref 25685

Audemars Piguet Platinum Dual Time Ref 25685

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Audemars Piguet - Audemars Piguet Rose Gold Huitieme Ref 25644 - The Keystone Watches

Audemars Piguet Rose Gold Huitieme Ref 25644

Audemars Piguet Rose Gold Huitieme Ref 25644

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Rolex - Rolex Rose Gold Yachtmaster Ref. 116695SATS - The Keystone Watches

Rolex Rose Gold Yachtmaster Ref. 116695SATS

Rolex Rose Gold Yachtmaster Ref. 116695SATS

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Patek Philippe - Patek Philippe Steel Ref. 3579 - The Keystone Watches

Patek Philippe Steel Ref. 3579

Patek Philippe Steel Ref. 3579

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Piaget - Piaget Yellow Gold Onyx Diamond ref 9795A6 retailed by Van Cleef & Arpels - The Keystone Watches

Piaget Yellow Gold Onyx Diamond ref 9795A6 retailed by Van Cleef & Arpels

Piaget Yellow Gold Onyx Diamond ref 9795A6 retailed by Van Cleef & Arpels

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Patek Philippe - Patek Philippe Yellow Gold Ellipse Ref 3738 - The Keystone Watches

Patek Philippe Yellow Gold Ellipse Ref 3738

Patek Philippe Yellow Gold Ellipse Ref 3738

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Cartier Platinum Tank Cintree Ref. 4124

Cartier Platinum Tank Cintree Ref. 4124

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Patek Philippe - Patek Philippe Rose Gold Pilot Ref. 5524R - The Keystone Watches

Patek Philippe Rose Gold Pilot Ref. 5524R

Patek Philippe Rose Gold Pilot Ref. 5524R

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Audemars Piguet - Audemars Piguet Rose Gold Royal Oak Chrono Diamond Watch Ref. 26315 - The Keystone Watches

Audemars Piguet Rose Gold Royal Oak Chrono Diamond Watch Ref. 26315

Audemars Piguet Rose Gold Royal Oak Chrono Diamond Watch Ref. 26315

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A. Lange & Sohne - A. Lange & Sohne Yellow Gold Saxonia 1st Series Solid Back Watch Ref. 102.002 - The Keystone Watches

A. Lange & Sohne Yellow Gold Saxonia 1st Series Solid Back Watch Ref. 102.002

A. Lange & Sohne Yellow Gold Saxonia 1st Series Solid Back Watch Ref. 102.002

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Cartier - Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection - The Keystone Watches

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

Cartier Platinum Ronde Louis Ref. W1528051 CPCP Collection

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Rolex - Rolex Yellow Gold Paul Newman Daytona Lemon Watch Ref. 6264 - The Keystone Watches

Rolex Yellow Gold Paul Newman Daytona Lemon Watch Ref. 6264

Rolex Yellow Gold Paul Newman Daytona Lemon Watch Ref. 6264

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Patek Philippe - Patek Philippe Rose Gold Nautilus Ref. 5711 - The Keystone Watches

Patek Philippe Rose Gold Nautilus Ref. 5711

Patek Philippe Rose Gold Nautilus Ref. 5711

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Rolex - ROLEX COSMOGRAPH DAYTONA BLUE BEACH WATCH REF. 116519 - The Keystone Watches

ROLEX COSMOGRAPH DAYTONA BLUE BEACH WATCH REF. 116519

ROLEX COSMOGRAPH DAYTONA BLUE BEACH WATCH REF. 116519

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Patek Philippe - Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140 - The Keystone Watches

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

Patek Philippe Platinum Perpetual Calendar Watch Ref. 5140

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Rolex Two-Tone Datejust ref 69173 with Tiffany Dial

Rolex Two-Tone Datejust ref 69173 with Tiffany Dial

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Rolex - Rolex Yellow Gold Day Date ref 18308 with Ferrite Dial - The Keystone Watches

Rolex Yellow Gold Day Date ref 18308 with Ferrite Dial

Rolex Yellow Gold Day Date ref 18308 with Ferrite Dial

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Patek Philippe - Patek Philippe Steel Tonneau Watch Ref. 3574 - The Keystone Watches

Patek Philippe Steel Tonneau Watch Ref. 3574

Patek Philippe Steel Tonneau Watch Ref. 3574

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A. Lange & Sohne - A. Lange & Sohne Yellow Gold Langematik Perpetual Wellendorf Bracelet Ref 310.221 - The Keystone Watches

A. Lange & Sohne Yellow Gold Langematik Perpetual Wellendorf Bracelet Ref 310.221

A. Lange & Sohne Yellow Gold Langematik Perpetual Wellendorf Bracelet Ref 310.221

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Rolex - Rolex Rose Gold Cosmograph Daytona Rainbow Watch Ref. 116595 - The Keystone Watches

Rolex Rose Gold Cosmograph Daytona Rainbow Watch Ref. 116595

Rolex Rose Gold Cosmograph Daytona Rainbow Watch Ref. 116595

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Patek Philippe - Patek Philippe Platinum World Time Watch Ref. 5131 - The Keystone Watches

Patek Philippe Platinum World Time Watch Ref. 5131

Patek Philippe Platinum World Time Watch Ref. 5131

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Cartier - Cartier Platinum Santos Ref. 1575 - The Keystone Watches

Cartier Platinum Santos Ref. 1575

Cartier Platinum Santos Ref. 1575

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Audemars Piguet - Audemars Piguet Yellow Gold Minute Repeater Ref. 25723 - The Keystone Watches

Audemars Piguet Yellow Gold Minute Repeater Ref. 25723

Audemars Piguet Yellow Gold Minute Repeater Ref. 25723

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Vacheron Constantin - Vacheron White Gold Skeleton Watch Ref. 33115 - The Keystone Watches

Vacheron White Gold Skeleton Watch Ref. 33115

Vacheron White Gold Skeleton Watch Ref. 33115

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Audemars Piguet - Audemars Piguet White Gold and Diamond Watch - The Keystone Watches

Audemars Piguet White Gold and Diamond Watch

Audemars Piguet White Gold and Diamond Watch

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Tudor - Tudor Steel Submariner ref 79190 - The Keystone Watches

Tudor Steel Submariner ref 79190

Tudor Steel Submariner ref 79190

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Patek Philippe - Patek Phillipe White Gold Ellipse Ref. 3548 - The Keystone Watches

Patek Phillipe White Gold Ellipse Ref. 3548

Patek Phillipe White Gold Ellipse Ref. 3548

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Patek Philippe - Patek Philippe White Gold Grand Ellipse Ref. 3589 - The Keystone Watches

Patek Philippe White Gold Grand Ellipse Ref. 3589

Patek Philippe White Gold Grand Ellipse Ref. 3589

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Patek Philippe - PATEK PHILIPPE STEEL AQUANAUT REF 5065 - The Keystone Watches

PATEK PHILIPPE STEEL AQUANAUT REF 5065

PATEK PHILIPPE STEEL AQUANAUT REF 5065

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Cartier - Cartier Yellow Gold Tank Asymetrique - The Keystone Watches

Cartier Yellow Gold Tank Asymetrique

Cartier Yellow Gold Tank Asymetrique

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Audemars Piguet - Audemars Piguet White Gold Tourbillon Repeater Watch Ref. 25858 - The Keystone Watches

Audemars Piguet White Gold Tourbillon Repeater Watch Ref. 25858

Audemars Piguet White Gold Tourbillon Repeater Watch Ref. 25858

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Cartier - Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s - The Keystone Watches

Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s

Cartier Yellow Gold Jumbo Tank Automatique Watch, Circa 1970s

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New Arrivals Preview
 
Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

Cartier Platinum Tank A Guichet Ref. WGTA0236, 2025 Edition (New Arrival)

$150,000 USD
 
Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

Patek Philippe White Gold Calatrava Watch Ref. 4189 (New Arrival)

$9,800 USD
 
Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

Rolex Yellow Gold Day-Date Watch Ref. 1803 with Claw Dial (New Arrival)

$18,750 USD
 
Boucheron - Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival) - The Keystone Watches

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

Boucheron Yellow Gold Invisible Set Sapphire Watch (New Arrival)

$9,500 USD
 
Rolex - Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival) - The Keystone Watches

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

Rolex Yellow Gold Cellini Watch Ref. 4014/8 with Orange Dial (New Arrival)

$7,500 USD
 
Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

Rolex Steel Submariner Ref. 5513 with Pumkin Lume (New Arrival)

$15,500 USD
 
Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

Patek Philiipe White Gold Calatrava Watch Ref. 3919 (New Arrival)

$15,000 USD
Shop all New Arrivals Preview

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Guarantee

Our watches go through a rigorous authentication process in which seasoned experts examine and evaluate the watches. These experts have decades of experience and have authenticated thousands of watches in their lifetime. We guarantee every piece of the watches we offer are 100% authentic. 

CONTACT US

You can reach us by emailing hello@thekeystone.com or call 213-632-9061

We are based in West Hollywood, CA. Please contact us for appointments to view a watch in person. 

We are not authorized sellers of the brands listed on our site. We sell vintage and pre-owned product.

Stay in touch.

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